baber/WOPTO huggingface dataset:
Patent GB-1073979-A (GB)
Title: Improvements in or relating to masers
IPC: H01S3/0975
Filed: 1964-10-20
Abstract: 1,073,979. Lasers. SPECTRA-PHYSICS Inc. Oct. 20, 1964 [Oct. 21, 1963], No. 42705/64. Heading H1C. In a laser an inhomogeneous magnetic or electric field is applied to the active medium to broaden the radiation linewidth of at least one of the laser translations of the medium to lessen the intensity of the radiation. The lessening of the intensity of the radiation is due to the Zeeman or Stark effects and since selected transitions in a multi-transition medium are affected to different degrees by the same field, by suitable choice of magnetic fields all but a selected one of the transitions may have their intensities reduced by line broadening. In a helium-neon laser, Fig. 2 (not shown), the 33913 A transition which uses the same upper energy state as the 6328 A transition is eliminated by applying an inhomogeneous field to the gaseous medium. Since the Doppler width of the 6328 A radiation is six times that of the 33913 A radiation the 6328 A radiation has its linewidth only slightly broadened by the magnetic field which eliminates the 33913 A radiation. The inhomogeneous magnetic field is produced by applying a variable D.C. to a coil divided into two oppositely wound series connected halves so that the magnetic fields of the two halves are equal and opposite. In the arrangement of Fig. 5 (not shown), the amplitude of the 6328 A output is stabilized by developing an electrical signal by means of a photo-detector positioned in the output beam, comparing the signal in a comparator with a reference signal and using the output of the amplifier to control the inhomogeneous magnetic field. Increasing or decreasing of the intensity of the 33913  radiation results in a decrease or increase of the 6328  output. In Fig. 6 (not shown), a prism (17) is introduced between the laser tube (1) and a mirror (4) forming part of the optical cavity. By positioning the off-axis mirror (4) exactly normal to the radiation at a given wavelength only that wavelength is reflected back to sustain maser oscillation. Since the single pass amplification of spontaneous emission is sufficient to depopulate the visible transistions a plurality of permanent magnets (21) are arranged along the laser tube to form an inhomogeneous field.
Patent GB-1443291-A (GB)
Title: Process and composition for drilling shale formation in sea water
IPC: C09K8/20
Filed: 1974-10-03
Abstract: 1443291 Drilling muds ITT INDUSTRIES INC 3 Oct 1974 [10 Oct 1973] 42938/74 Heading E1F A drilling mud for well drilling through marine shale formations comprises a clay-sea water slurry containing a potassium salt of lignosulphonate, the lignosulphonate being prepared by reacting, at temperatures from 50 to 200 C, potassium hydroxide or a salt of sulphurous acid with soluble base spent sulphite liquor. The hydroxy acid salts in the reaction product may be reacted with ferric salts to form iron complexes.
Patent GB-1315080-A (GB)
Title: Commutator for a small-electrodynamic machine
IPC: H01R39/02
Filed: 1971-09-15
Abstract: 1315080 Commutators for dynamic electric machines PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 15 Sept 1971 [18 Sept 1970] 42987/71 Heading H2A Each segment of a commutator, e.g. of the flat type, for a small electro dynamic machine, is made of sheet material comprising a metal substrate on to which has been rolled a gold alloy contact layer. The alloy may contain 69- 71% gold, 19-21% silver, and 9-11% copper. The mean roughness of the layer surface should not exceed 2 Á.
Patent GB-1443449-A (GB)
Title: Complexes for use in electrophotography
IPC: G03G5/06
Filed: 1973-09-14
Abstract: 1443449 Photo-conductive complex OCEVAN DER GRINTEN NV 14 Sept 1973 [15 Sept 1972] 43353/73 Heading G2C A photo-conductive composition comprises a complex of an electron-donating organic semiconductor or photo-conductor with an electron acceptor of Formula wherein R and R' are the same or different and are electron withdrawing atoms or groups, p and p' are 0, 1 or 2 and n is 1 or 2. In the embodiments the photo-conductor is poly-N-vinycarbazole but polyvinylpyrene, an oxadiazole and a polyvinylanthracene are also mentioned. The electron acceptor is preferably 1, 3, 7-trinitro or 3, 7-dibromo- 1, 9-dinitro dibenzothiophene-5,5-dioxide or 3, 7-dinitro dibenzothiophene- 5-oxide, but many other dibenzothiophene oxides are specified. Sensitizers, binders and other photo-conductors may be included in the composition which is coated on aluminium or other supports to give an electrophotographic element. The element may be charged to either polarity according to the proportion of donor to acceptor. Specification 1443450 is referred to.
Patent GB-1126812-A (GB)
Title: A method of and apparatus for controlling the induced flow through a heat exchange unit of gases
IPC: F04D27/02
Filed: 1965-10-13
Abstract: 1,126,812. Controlling induced draught fans. DEUTSCHE BABCOCK & WILCOX-DAMPFKESSEL-WERKE A.G. 13 Oct., 1965 [7 Nov., 1964], No. 43363/65. Heading F4B. [Also in Division G1] The throttle control of an induced draught fan in the flue of a boiler, which may be a waste heat boiler operating on converter waste gases, is regulated with reference to the waste gas temperature and the rate of flow of waste gas in the flue outlet as indicated by a differential pressure measurement. The throttle may be controlled so that a constant ratio is maintained between the temperature and rate of flow such that a constant small oxygen excess is present or so that the converter waste gases are not burnt in the boiler. The throttle control can be adjusted manually if the automatic regulation fails.
Patent GB-1135888-A (GB)
Title: Tunable oscillator circuits
IPC: H03B5/12
Filed: 1967-09-25
Abstract: 1,135,888. Transistor oscillator circuits; tuning radio receivers. HAZELTINE CORP. 25 Sept., 1967 [5 Oct., 1966], No. 43411/67. Headings H3Q and H3T. A tunable oscillator operable over two bands comprises an electronic device having three electrodes, one of which is connected to a reference potential through a circuit tunable through the bands, the circuit being also connected to another electrode through a circuit which provides inductive coupling for oscillations in the higher band and capacitive coupling during oscillations in the lower band. The Figure shows the local oscillator of a television receiver tunable over the UHF and VHF bands and comprising a UHF tank circuit 13, 14 and a VHF tank circuit 15, 17, tuning being effected by moving a slider first along one inductor and then along the other. The reactance of the UHF circuit is negligible in the VHF range and in the UHF range the device 18 which comprises a ferrite sleeve on the conductor has a high resistance serving both to isolate the VHF circuit and to damp any spurious resonances therein. Feedback at VHF is provided by a capacitor 20 effectively in parallel with a circuit 21 which is capacitive at these frequencies but which in the UHF band is inductive and acts like a choke to prevent the passage of current therethrough.
Patent GB-937770-A (GB)
Title: Improvements in or relating to seals for rotary valve-spindles
IPC: F16K41/00
Filed: 1960-12-19
Abstract: 937,770. Stuffing-box substitutes. PORRINGER & SCHINDLER G.m.b.H. Dec. 19, 1960 [Dec. 19, 1959], No. 43540/60. Class 122 (5). [Also in Group XXIX] The rotary spindle 3 of a valve is sealed to the casing 1 by a resilient ring 6 clamped between the casing and a cover 2 and has its inner periphery entering slidably and sealingly into a complementary groove 7 in a collar 8 on the spindle.
Patent GB-1276346-A (GB)
Title: Electric connection means
IPC: H04B3/40
Filed: 1969-09-03
Abstract: 1276346 Transmission line matching SIEMENS AG 3 Sept 1969 [5 Sept 1968] 43692/69 Heading H4R Flexible transmission line, 1, is connected to transmitter and receiver by respective plug or socket connection members, 7 and 10, with buffer units, 6 and 9, arranged respectively between the line and the pins of the plug or socket connectors, to isolate the plug and socket connections, and their possibly unmatched impedance, from the line and provide matched termination for the line. As shown and described the line is connected to terminals 4 and 5 in the connector housings, 2 and 3, and the receiving end connector housing contains a terminating impedance 8. Also described is a buffer unit for use with pulse transmission which uses "NOR" gates at the transmitting and receiving ends of the lines, Fig. 2 (not shown).
Patent GB-1402498-A (GB)
Title: Triazine derivatives their production and their medicinal use
IPC: C07D251/26
Filed: 1973-09-19
Abstract: 1402498 Antiprotozoal compositions BAYER AG 19 Sept 1973 [20 Sept 1972 9 Dec 1972 11 April 1973 17 April 1973] 43971/73 Heading A5B [Also in Division C2] Pharmaceutical compositions having activity against protozoal infections comprise, as active ingredient, a triazine derivative of the general formula wherein each of R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>, R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP>, R<SP>8</SP> and R<SP>9</SP> is a hydrogen or halogen atom or an alkyl, haloalkyl, nitro, cyano, amino, acylamino, alkoxycarbonylamino, carboxyl, alkoxycarbonyl, carbamoyl, alkanoyl, alkylsulphonyl or sulphamoyl group, R<SP>10</SP> is a hydrogen atom, an alkyl, cycloalkyl, haloalkyl, alkoxyalkyl, alkenyl, alkynyl, alkoxycarbonyl, thioalkoxycarbonyl, alkoxy, hydroxy, amino or dialkylamino group, a polymethyleneimino group optionally interrupted by a hetero atom in the polymethylene chain, or an optionally substituted benzyl or aryl group, R<SP>11</SP> is a hydrogen atom or alkyl group and X is an oxygen or sulphur atom, or a salt thereof, together with a suitable carrier and optionally further active ingredients, e.g. imidazole-4, 5-dicarboxylic acid amide or a sulphonamide, such as a paminobenzenesulphonamide of 2-amino-4, 6- dimethylpyrimidine, 2-aminoquinoxaline, 2- amino-5-methoxypyrimidine or 2-amino-4- methylpyrimidine.
Patent GB-1456822-A (GB)
Title: Apparatus for extracting liquid droplets form a gas flow
IPC: F28C1/16
Filed: 1973-09-19
Abstract: 1456822 Removing droplets from gas SERCK INDUSTRIES LTD 18 Sept 1974 [19 Sept 1973] 44021/73 Heading BIT A packing for removing entrained water droplets from air leaving a cooling tower comprises parallel sheets 2 of plastics defining between them sinuous ducts of rectangular cross-section through which the air flows vertically upwards (arrows X), the longer sides of the ducts having projections 8 which are semicircular in cross-section and arcuate lengthwise with their ends directed downwards. The projections assist water to drain back against the air stream. Sheets 2 are of square-wave section in a direction normal to Fig. 2 and are arranged back to back to form the ducts. Sheets may be glued together or held together in a metal frame.
Patent GB-1241937-A (GB)
Title: Production of carbonised and graphitised fibres
IPC: D01F9/22
Filed: 1969-09-05
Abstract: 1,241,937. Carbonised and graphitised fibres. MONSANTO CO. 5 Sept., 1969 [6 Sept., 1968], No. 44161/69. Heading C1A. A carbonized or graphitized fibre or fibrous web is prepared from (a) acrylonitrile or a copolymer of acrylonitrile with up to 15 mol. per cent of an α-monoethylenically unsaturated monomer; (b) natural or regenerated cellulose; or (c) an aromatic polyamide having repeating units with the general formula in which R and R<SP>1</SP> are hydrogen atoms or alkyl alkoxy groups with 1-3 carbon atoms or a nitro or phenyl group, all the substituents R<SP>1</SP> being alike, each X and Y is a hydrogen atom, an alkyl group having 1-3 carbon atoms or a phenyl group, and the phenylene groups are either meta or para phenylene groups, by heating at a temperature of 180-550 C. in an oxygen containing atmosphere to partially oxidize and blacken the fibres, followed by heating at 700-1200 C. in a non-oxidizing atmosphere to effect carbonization, and, when graphitization is desired, heating in a non- oxidizing atmosphere or vacuum at 1200- 3600 C., such that the final step at least is performed by means of a laser beam.
Patent GB-1063075-A (GB)
Title: Improvements in fluid flow control valve seatings
Inventor: BEAN MARCUS IVAN
IPC: F16K3/314
Filed: 1962-11-22
Abstract: 1,063,075. Valves. LANGLEY ALLOYS Ltd. Nov. 19, 1963 [Nov. 22, 1962], No. 44193/62. Heading F2V. A valve has in combination with the valve gate or with its seat, a movable disc providing the seating area or surface and capable as wear occurs in the valve or seat, of having compensating shims interposed in such a manner as to raise the seating area or surface. In the Figure, a spindle 7 operates a valve gate or wedge 8 positioned in a valve chamher 4 adjoining which aligned duets 2, 3 with aligned ports face each other. Removable discs 14, 15 are joined to the gate 8 by a central screwthreaded spigot 20, both the rear face 19 of the disc and the co-operating face 22 of the valve having flat annular plain surfaces. If wear occurs, compensating shims can be inserted between the faces 19 and 22. One of the seating surfaces may have machined grooves providing continuous circular ribs of triangular section, these grooves being deformed on contact with their co-operating surface and having the gaps between them filled with a plastics material such as polytetrafluoroethylene. In a modification, ring inserts may be carried by the discs 14 and 15 to co-operate with the seat 10 and 11.
Patent GB-1242427-A (GB)
Title: Low saturation voltage transistor
IPC: H01L29/73
Filed: 1968-09-18
Abstract: 1,242,427. Transistors. WESTINGHOUSE ELECTRIC CORP. 18 Sept., 1968 [21 Sept., 1967], No. 44338/68. Heading H1K. In a junction transistor wafer the collector region, disposed on the opposite surface to the emitter includes a part which is of substantially the same configuration as the emitter region and has adjacent its junction with the base a similar doping profile and a shallower part, and the base region has a more highly doped portion extending to the emitter face of the wafer. Such a device may be formed from a wafer of P-type germanium, silicon, silicon carbide, or A III B V  or A II B VI  compound with a uniform doping of 10<SP>14</SP>-10<SP>17</SP> impurity atoms/c.c. by diffusing aluminium, boron, gallium or indium into both faces to form regions doped with 10<SP>17</SP>-10<SP>21</SP> atoms/c.c., removing the diffused layer from one face and then diffusing phosphorus, arsenic or antimony into both faces to form N-type surface regions. After etching off the central parts of the N regions through photoresist masking the wafer is again heated to extend the N regions beyond the bases of the etched holes and through the P diffused region. Then the lower face is flattened by abrasion and/or etching and donor material diffused into it to complete the structure shown in Fig. 8 which is hard or soft soldered to a metal support 32. Finally aluminium emitter and base contacts 36, 38 are evaporated on.
Patent GB-1018558-A (GB)
Title: Washing machine
IPC: D06F29/00
Filed: 1962-11-23
Abstract: A washing container in a washing machine is provided with a removable partition to allow the upper part of the container to be used as a kitchen sink, the partition and container having communicating outlets.  The partition may be plane and rest on a rib or stepped ledge, or have upwardly-extending side walls with a flange to rest on the top edges of the washing container.  An agitator and water heater are provided.
Patent GB-1536666-A (GB)
Title: Branch piece for pipes
IPC: F16L41/02
Filed: 1975-10-29
Abstract: 1536666 Branch pieces SEKISUI KAGAKU KOGYO KK 29 Oct 1975 [1 Nov 1974] 44553/75 Heading F2G A branch piece, e.g. for sewers, comprises a saddle plate 1 having an opening to which is connected a branch portion 2 suitable for connection to a branch pipe 4, the axis of the outlet of the branch portion being tangential to the plate 1. The branch portion 2 may be bonded to the saddle plate 1 or formed integrally with it. A land is formed around the opening in the saddle plate 1 for location in a hole in a main pipe 3. The saddle plate 1 may be bonded to the main pipe 3. Non-circular pipes 3<1> may be branched-in this way.
Patent GB-1116452-A (GB)
Title: Method of and apparatus for generating fluid pulses
Inventor: FOSTER KEITH
IPC: F04B49/00
Filed: 1964-11-02
Abstract: 1,116,452. Hydraulic apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 26,1965 [Nov. 2, 1964], No. 44656/64. Heading F1P. Longitudinal waves of variable amplitude are transmitted through a duct 11, Fig. 1, charged with liquid by means of first and second pulse generators each comprising first and second stators 13,14 having groups of radial cylinders 15,16 opening into duct 11 and surrounded by a common driven rotor assembly 22 including cam tracks 25, 26 bearing against spherical pistons 19, 20; the second stator 14 being angularly adjustable relative to the first stator 13 whereby the generators operate in differing phases and the resultant amplitude in duct 11 may be adjusted between maximum and minimum values. Said angular adjustment of stator 14 is effected by a sleeve 30 driven through worm gears 28, 29 and splined to a tubular extension 31 of stator 14. The gear 28 carries a control lever 41, Fig. 3, which is rocked by a ram 50 biased by a spring 50a to the position of maximum pulse amplitude and opposed by hydraulic pressure in an output duct 42 when it opens a non- return valve 44 in a branch duct 45 connected by a duct 47 to the ram 50 and through a variable restriction 48 to a reservoir 46. Make-up liquid is withdrawn from reservoir 46 by a backing pump 53 which delivers past a non-return valve 52 when pressure in duct 42 falls below a predetermined value.
Patent GB-1028048-A (GB)
Title: Apparatus for washing dishes, crockery and other utensils and articles
IPC: A47L15/18
Filed: 1963-11-13
Abstract: 1,028,048. Dishwashing apparatus. DAWSON BROS. Ltd., D. DAWSON and G. DAWSON. Feb. 11, 1965 [Nov. 13, 1963], No. 44760/63. Heading A4F. Dishwashing apparatus particularly for use in hospitals or canteens comprises a cabinet for receiving a trolley carrying the articles to be washed by liquid discharged from spray pipes 11 projecting from a carriage 9 reciprocated laterally by sprocket and chain gearing 17, 18 (Fig. 4, not shown) or by crank mechanism. Detergent liquid is fed to the spray pipes 11 by a pump 14 from a tank 20 containing a thermostatically controlled steam heating coil 21, and which may be provided with an automatic detergent dispenser. The used detergent liquid returns to the tank 20 via filters 27. The spray pipes 11 may also be connected to a pipe 16 (Fig. 2, not shown) for supllying hot rinsing water which passes to the tank 20 and thence to drain through an overflow device 24. The washing and rinsing cycles are automatically controlled.
Patent GB-1438832-A (GB)
Title: Process for the redistribution of alkylsilanes and alkylhydro silanes
IPC: B01J31/00
Filed: 1973-09-25
Abstract: 1438832 Silane redistribution GENERAL ELECTRIC CO 25 Sept 1973 [20 Oct 1972] 44804/73 Heading C3S Alkylsilane redistribution by contacting a silane R a SiX 4-d  with a silane R<SP>1</SP> b SiX 4-b  or alkylhydrosilane redistribution by contacting a hydrosilane R<SP>3</SP> d H e SiX 4-d-e  with a hydrosilane R<SP>4</SP> f H g SiX 4-f-g  is carried out in the presence of 1 to 15% by weight of the reaction ingredients of AlCl 3  and a catalytic amount of a promotor of the formula wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> denote C 1-8  alkyl radicals, X denotes halogen, preferably chlorine, R<SP>11</SP> denotes a C 6-15  mononuclear aryl, binuclear aryl, aralkyl or alkaryl radical, R<SP>111</SP> denotes C 1-8  alkyl, a is 1, 2 or 3, b is 1, 2, 3 or 4, c is 1 to 4, k is 0 to 2, the sum of c+k may be up to 4, d and e are 1 or 2, the sum of d+e not exceeding 3, f is 1 or 2, g is 0, 1 or 2, the sum of e+f+g being up to 4. The reaction may be carried out as a simple disproportion of a single compound provided that halogen is present in the starting compound. In Examples (1) and (2) a mixture of trimethylchlorosilane and methyltrichlorosilane is substantially converted to dimethyldichlorosilane; (3) dimethyldichlorosilane is diproportionated to trimethylchlorosilane and methyltrichlorosilane; and (4) a mixture of trimethylchlorosilane, methyltrichlorosilane and methyldichlorosilane is substantially converted to dimethyldichlorosilane.
Patent GB-996467-A (GB)
Title: A method of and machine for depositing ice cream or the like
IPC: B65B3/04
Filed: 1962-11-29
Abstract: 996,467. Packaging machines. QUAKER OATS CO. Nov. 29, 1962 [Dec. 5, 1961], No. 46132/62. Headings B8C and B8T. A machine for depositing ice cream or like fluent substance in mould cavities comprises a filling head F (Fig. 4) mounted for vertical reciprocation on a frame H, above a conveyer E (Fig. 2) which intermittently moves mould cavities A which are in cartons D into a position immediately below the filling head. The filling head comprises a pressure chamber 27 into which ice cream is fed continuously through an inlet nipple 29<SP>1</SP>, and upon indexing the head downwardly into the cavities a valve 31 is rotated to allow ice cream to flow into said cavities. After momentary interruption the head is moved upwardly at a uniform rate, the valve is closed during the upward uniform movement and upon reaching the tops of the cavities the movement of the heads is slowed down and then the nozzles are accelerated away from the cavities. The reciprocation of the filling head and intermittent movement of the conveyer E is effected by an electric motor I which actuates through gearing 15 a cam 43 and a crank 17. The filling head is reciprocated vertically by a cam-operated crank 39 whilst a second crank 50 operates through linkages 57, 68, 63-65 the valve 31. The conveyer E is indexed intermittently by means of the crank 17 (Figs. 2 and 3) which effects rotation of a ratchet-wheel 23 by a pawlactuating lever 19, any back movement of the wheel 23 being prevented by a back-stop pawl 24. The speed of operation of the machine can be varied by rotation of a shaft 74 by a hand wheel 77 which causes a lever 69 (Fig. 3) to pivot about point 70 and to vary the depths of the V-grooves of pulleys 11 and 13, thus varying the ratio of the driving and driven pulleys.
Patent GB-1519958-A (GB)
Title: Headlamp tilting system in a motor vehicle
IPC: B60Q1/105
Filed: 1974-10-17
Abstract: 1519958 Tilting vehicle headlamps LUCAS ELECTRICAL Ltd 30 Sept 1975 [17 Oct 1974] 45136/74 Heading F4R A vehicle headlamp tilting mechanism ineludes an element 13 sensitive to the attitude of the vehicle body relative to an unsprung part and connected by a resilient arm 14 to a pivotable shaft 15 which is restrained by a second resilient arm 16 abutting a stop 17. The shaft 15 also carries a pendulum 18 on an arm 19 which is connected to a rod 20 forming the mechanical input of a first transducer 21 having an hydraulic output along a pipe 26. This output is transmitted to a second, similar, tranducer (not shown) having an hydraulic input and a mechanical output arranged to tilt the headlamp. As shown, the element 13 is a wire with an outer sheath, and the first transducer 21 comprises a bellows 24 responsive to movements of the rod 20 in an hydraulic cylinder. The first transducer may drive two headlamp-tilting cylinders via the pipe 26. In a further embodiment the cylinder 22 is partitioned and is movably mounted on the vehicle body 10 by a second bellows and rod arrangement (Fig. 3, not shown). The pendulum 18 is responsive to acceleration of the vehicle and acts directly on the rod 20.